Drink mixer



C. H. BEACH- DRINK 'MIXER Nov. 22, 1927.

Filed May 14, 1923 Patented Nov/, 1927.

UNITED STATES PATE-NT oFFlcE.

CHESTER E. BEACH, OF RACINE, WISCONSIN,ASSIGNOR TO WISCONSIN ELECTRIC I COMPANY, A. CORPORATION OF WISCONSIN.

DRINK MIXER.

Application filed May 14,

My invention relates to improvements n drink mixers such as are used on soda fountains.

The object of my invention simple portable device of this character.

contributory object is to provide a supporting standard from which the motor may be readily lifted by hand to permit a receptacle to -be placed beneath it so that the stirring device or agitator may be lowered into the receptacle or lifted from it without providing an elaborate mechanism permitting a counter-weighted motor to be slid up and down on a supporting structure, as has been l5 done heretofore. An additional object is to provide a smooth running, finely balanced agitator rod. This is accomplished largely by forming said rod as an extension of the armature shaft instead of a separate part to be attached thereto.

ln the drawings 1 have'illustrated one einbodiment of my invention.

Figure l is an elevation v section; and

Fig. 2 is an that in Fig. 1.

The equipment includes a supporting base 1, preferably in the form of la castin having an upright standard thereon whic may be formed of a metal rod 2, having its midI die` portion bent to form a ring 3, the ends of said rod being seated within openings in the base and suitably secured therein. The portion of the rod which is formed into a supporting ring struct-ure is surrounded by a cushioning material, preferably a rubber tube t, slipped over the rod as shown.

rihe motor 5 may be of any suitable type and has a shoulder 6 thereon formed where the lower section of the motor casing t's into the upper section.4 Said shoulder enables the motor to besupported by said ring when lowered by hand, into the position shown in the drawings.' The armature shaft is extended to form a spindle 7 having an agitator 8 secured to the lower end thereof.

'The device is lifted by an insulating handle 9, which is preferably of cylindrical form,

and is spaced above the upper end of the motor by hollow insulating tubes 10. The

hollow handle contains a suitable switch 11,

preferably of the type yhaving two stems 12,

is to provide a thereof partly in elevation at right angles to projecting from Y opposite 'sides whereby i veither stem may ,be readily pushed inward 1923. Serial No. 638,739.

by hand. The handle is held to the motor by screws 13 passing through the hollow tubes 10, one of said tubes serving also to enclose conductors 14, whichlead from the motor to A the switch and to the .external circuit conductors 15.

The receptacle 16 rests on a yielding pad 17 made preferably of rubber, the operator being aided in positioning said receptacle centrally, by a pair of pins 18, projecting from the sai-d base, which latter is provided with a rubber ring 19 on the lower side thereof to prevent marring the surface of the support on which said base rests.'

The agitator rod 7, constituting an integral part of the armature shaft, is supported at its upper end in a spherical babbitt bearing 20, which latter is seated in a spherical pressed steelv shell 21. A sheet metal cap -22'completes the enclosure and is secured to the motor casing to prevent turning. The agitator shaft has a shoulder 23 resting on the cap 22. The'arrangement is such that a ball and socket joint is provided permitting a slight deviation of the agitator shaft from the center axis of the upper part of the motor casing, in case any slight inaccuracy develops in assembling the vinterfitting upper and lower parts of said casing, which join at the'shoulder 6. 'An oil wick 24:;is.

provi-ded to oil the bearings and an oil guard 25 surrounds the agitator rod near the upper end thereof to prevent an occasional drop of oil from dripping into the beverage which is being mixed, and `also to prevent such oil from being scattered by centrifugal force. The diameter of the said agitator rod below said cap is slightly less than above the same which facilitates assembling of parts, the reduced :diameter resulting in a slight shoulder 26,

Motors of this character operate at very high speeds, for example 12,000 revolutions per minute. The armature, therefore,

should be very carefully balanced to avoid excessive vibration. The agitatorrods employed heretofore, have been formed as separate partsy attached to the armature shaft.

Under such circumstances, itis almost impossible to center the agitator rod with the same. degree of accuracy as' the nicely b'al-l 105 anced armature shaft, and therefore the rapid rotation of the agitator shaft results i ,in vibration of the motor, off-setting the care and eiforts'expended in balancing the' been reduced.

The agitator 8Yis also very carefully made, and to avoid vibration of the agitator rod, is carefully centered therein by means of a stud 27 having a short cylindrical surface which centers said stud independently of the screw threads. As a result, all the rotating parte run very smoothly even at exceedingly i'gh speeds.

In using the device, the operator simply lifts the motor from the supporting ring by means of the handle and places the receptacle beneath said ring, thereafter lowering the motor and operating the switch with the same hand thus starting thc motor and stirring the contents of said receptacle. After the mixing operation has been completed, the operator simply lifts the motor from its support at the same time throwing off the switch and with the other hand removes the receptacle and thereafter placesv the motor on the ring where it remains until the next mixing operation. The ring is supported at one side only by the rods 2, so that it overhangs the base l, making it easy to position the receptacle on the base and remove it therefrom, without interfering with said rods. The construction described is very simple mechanically, inexpensive in construction and convenient to manufacture lt is also sanitary'. The handle or switch may be located on some other part of the motor, the side, for

example, and various other rearrangements of parts or modifications of design will readily suggest themselves.

claim p l. A drink mixer comprising a support for a receptacle, an upright member secured to said support and arranged at one side of said receptacle, a supporting device extending horizontally from said upright member at an elevation above the top of said receptacle, whereby said receptacle maybe placed on said support and removed therefrom with one hand without interference bv said upright member or said supporting evice, the latterdevice having an opening, a motorQ having a. casing which fits said opening,

whereby it may be positioned centrally above saidreceptacle andfreely lifted therefrom, and an agitator depending' from said motor into said receptacle to stir the contents thereof when said motor and receptacle-are 1 in operative relation to each other.

2( A drink mixer comprising a support for a receptacle', an' upright membersecured' to said support andl arranged at one side of said receptacle, a supporting device extendling horizontally from said upright member at an elevation above the top of said receptacle, whereby said receptacle may be placed on said support and removed therefrom with one hand without interference by said upright member or said supporting device, the latter device having an opening, a motor having a casing which fits said opening, whereby it may bepositioned centrally above said receptacle and freely lifted therefrom, aA handle on the top ofsaid motor to facilitate such removal, and an agitator dev77 pending from said motor into said receptacle to stir thecontents thereof when said motor and receptacle are in operative relation to each other.

3. A drink mixer comprising a support for a receptacle, an upright member secured to said support and arranged at one side of said receptacle, a supporting device extending horizontally from said upright member at an elevation above the top of said receptacle, whereby said receptacle may be placed on said support and' removed therefrom with one hand without interference by said upright member or said supporting device, the latter device having an opening, a motor having a casing which fits said opening, whereby it may be positioned centrally above said receptacle and freely lifted therefrom, a handle on said motor casing having a switch associated therewith, whereby the motor circuit may be openedy or closed by hand as said motor is being lifted from or returned to operative position over said receptacle, and an agitator depending from said motor into said receptacle to stir the. contents thereof when said motor and reeetacle are in operative relation to each ot er.

4. A drink mixer comprising a motor with a depending agitator, the motor casing havsecured, said standard having a base located i beneath said motor and ring to supportthe latter in stable equilibrium at an elevation above the top of the receptacle whose contents are to be stirred, said standardfbeing located at one side of said receptacle, whereby the latter may be placed beneatlr said ring or removed therefrom by hand without obstruction, whenever said motor is lifted from said ring to prevent interference between said depending agitator and said re- 1.20 ceptacle, into which it normally projects. when both are in opera-tive position.

5.- A mixing apparatus com rising a support for a receptacle, an uprig t member secured to said support and arranged at one side of said receptacle, a motor having a casing and an agitator depending from said motor into the receptacle to stir the contents thereof, and a supporting device secured to and extending rlaterally from said upright member over the top of said receptacle and having a ring-like portiony of greater diamevter than the motor casing to embrace the -tac le, said motor being freely liftable from said supporting device so that said agitator may be raised out 0f said receptacle and said receptacle being freely movable laterally into and out of position on its support when the motor and its agitator are so lifted.

6. A mixing apparatus comprising a support for a receptacle, an upright member securedk to said support at one side of the receptacle, a motor haring a casing and an agitator' depending from said motor into the receptacle to sti/r the contents thereof, and e, supporting device for holding the motor vertically in operative relation to the receptacle, extending laterally from said upright member over the top of the receptacle and having a motor engaging portion constructed to embrace the motor casing in a region above the lower face thereof so as toposition it laterally, said motor and agitator being freely liftable from said supporting device to permit the receptacle to be moved into and out of position on said receptacle support.

7. A mixing device of the class described, comprising a motor having a vertical armature shaft and a substantially cylindrical casing with a horizontal band encircling the same at the middle thereof and projecting 3 therefrom to form an annular support, an agitator. shaft depending from said vertical armature shaft in alignment therewith, with 'its lower en d free and unsupported and having an enlargement thereon, a horizontal sup- 4 port for said motor having an opening thereon to receive part of said cylindrical casingv with the lower edge of said band resting on the margin of said opening, an upright member to which one side of said support is 4 connected, astand on which a. receptacle may rest beneath saidl motor and having an opening at one side to receive the lower end of said upright member and thus support the motor with its agitator' shaft extending sub- 5 stautially centrally' into said receptacle to stir the contents thereof, and a, handle as- .sociated with said motor casing whereby said motor may be freely lifted from .its support to permit said receptacle to be removed lat- 5 erally from said stand; In testimony whereof, I have subscribed my name.

CHESTER H. BEACH. 

